Preparation of a Carbon-Based Solid Acid with High Acid Density via a Novel Method


A carbon-based solid acid with high acid density was successfully prepared using camphor tree branches as raw materials through a novel method including dilute sulfuric acid activation, carbonization in refluxing solvent and sulfonation. Physical characterization was detected to show that the carbon-based acid is amorphous with polycyclic aromatic carbon sheets attached plentiful -OH, -COOH, and -SO3H groups. The sulfonic acid density and total acid density of it reached 2.05 mmol·g-1 and 5.63 mmol·g-1, respectively by acid-base titration. As a solid acid catalyst, it showed excellent performance in the ketalization of cyclohexanone with glycol.

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Ouyang, S. , Kuang, X. , Xu, Q. and Yin, D. (2014) Preparation of a Carbon-Based Solid Acid with High Acid Density via a Novel Method. Journal of Materials Science and Chemical Engineering, 2, 4-8. doi: 10.4236/msce.2014.26002.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Okamura, M., Takagaki, A. and Toda, M. (2006) Acid-Catalyzed Reactions on Flexible Polycylic Aromatic Carbon in Amorphous Carbon. Chemisty Material, 18, 3039-3045.
[2] Dora, S., Bhaskar, T. and Singh, R. (2012) Effective Catalytic Conversion of Cellulose into High Yields of Methyl Glucosides over Sul-fonated Carbon Based Catalyst. Bioresource Technology, 120, 318-321.
[3] Xu, Q., Wang, Y.J. and Yin, D.L. (2009) One-Pot Three-component Mannich Reaction Catalyzed by Sucrose Char Sulfonic Acid. Frontiers of Chemical Engineering in China, 3, 201-205.
[4] Hara, M., Yoshida, T. and Takagaki, A. (2004) A Carbon Material as a Strong Protonic Acid. Angewandte Chemie International Edition, 43, 2955-2958.
[5] Chen, G. and Fang, B.S. (2011) Preparation of Solid Acid Catalyst from Glucose–starch Mixture for Biodiesel Production. Bioresource Technology, 102, 2635-2640.
[6] Yu, J.T., Dehkhoda, A.M. and Ellis, N. (2011) Development of Biochar-based Catalyst for Transesterification of Canola Oil. Energy Fuels, 25, 337-344.
[7] Song, X.L., Fu, X.B. and Zhang, Ch.W. (2012) Preparation of a Novel Carbon Based Solid Acid Catalyst for Biodiesel Production via a Sustainable Route. Catalysis Letter, 142, 869-874.
[8] Chang, B., Tian, Y. and Shi, W. (2013) SO3H-functionalized Me-soporous Carbon/silica Composite with a Spherical Morphology and Its Excellent Catalytic Performance for Biodiesel Production. Journal of Porous Materials, 20, 1423- 1431.
[9] Chang, B.B., Fu, J. and Tian, Y.L. (2013) Multifunctionalized Ordered Mesoporous Carbon as an Efficient and Stable Solid Acid Catalyst for Biodiesel Preparation. Journal of Physical Chemistry C, 117, 6252-6258.
[10] Suganuma, S., Naka-jima, K. and Kitano, M. (2008) Hydrolysis of Cellulose by Amorphous Carbon Bearing SO3H, COOH, and OH Groups. Journal of the American Chemistry Society, 130, 12787-12793.
[11] Wu, Y.Y., Fu, Z.H. and Yin, D.L. (2010) Microwave-Assisted Hydrolysis of Crystalline Cellulose Catalyzed by Biomass Char Sulfonic Acids. Green Chemistry, 12, 696-700.
[12] Zhang, Ch., Fu, Z.H. and Liu, Y.Ch. (2012) Ionic Liqued-Functionalized Bi-ochar Sulfonic Acid as a Biomimetic Catalyst for Hydrolysis of Cellulose and Bamboo under Microwave Irradiation. Green Chemistry, 14, 1928-1934.
[13] Smith, M.B. (2002) Organic Synthesis. 2nd Ed., McGra-Hill, New York.
[14] Wu, H.H., Yang, F. and Cui, P. (2004) An Efficient Procedure for Protection of Carbonyls in Bronstedacidic Ionic Liquid [Hmim]BF4. Tetrahedron Letter, 45, 4963-4965.
[15] Li, D.M., Shi, F. and Peng, J. (2004) Application of Functinal Ionic Liquids Possessing Two Adjacent Acid Sites for Acetalization of Aldehydes. Journal of Organic Chemistry, 69, 3582-3585.
[16] Liang, X. and Qi, C. (2011) Synthesis of a Novel Ionic Liquid with Both Lewis and Brønsted Acid Sites and Its Catalytic Activities. Catalysis Communications, 12, 808-812.

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